Briqueting-press



W. P. MICHAELSEN.

BRIQUETING PRESS. APPLICATION FILED AUG-121 1918f Patented Mar. 22, 1921.

4 $HEETS-S flEET WKLLIAM F. MICHAEL-SEN.

w. P. MICHAELSEN.

BRIQUETING PRESS. APPLICATION FILED AUG-l2, 1918.

1,372,160. Patented Mar. 22, 1921.

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W. P. MICHAELSEN. BHIQUETING PRESS.

APPLICATION FILED AUG. 12. 1191s. 1,372,160; ted Mar. 22, 1921.

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W. P. M[CHAELSEN.

BRIQUETING PRESS.

APPLICATION FILED AUG-12, 1918.

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UNITED STATES PATENT OFFICE.

WILLIAM I. MICHAELSEN, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TO EILEEN MICHAELSEN KLEBBA, OF MINNEAPOLIS, MINNESOTA.

BRIQUETING-PBESS.

Specification of Letters Patent.

Patented Mar. 22, 1921.

Application filed August 12, 1918. Serial No. 249,557.

' resident of Minneapolis, in the county of Cir Hennepin and State of Minnesota, now a member of Company C, 326th Field Signal Battalion, stationed at Camp \Vadsworth, Spartanburg, South Carolina, have invented certain new and useful Improvements in Briqueting-Presses, of which the following is a specification. a

My invention relates to presses for forming loose, granular, fibrous or pulverulent materials into briquets, particularly materials such as peat, lignite, coal-dust, sawdust, and similar substances suitable for 'fuel.

It is the object of my invention to provide a plurality of molds rotatably mounted and arranged topass successively positions at which the loose material is fed thereinto, then to positions at which the charge of ma terial is compressed into a briquet, then to positions at which the briquet is ejected from the mold, and finally returning to the feed position, whereby the formation of the briquets may be continued indefinitely and automatically. without attention other than to continue the supply of material to the machine. A further object of my invention is to provide efficient and durable actuating means for the pressing mechanism. A further object of my invention is to provide means for varying the stroke of the main compression plunger, while maintaining the stroke of the feed-plunger constant or substantially so. A further object of my inven tion is to provide a novel actuating device for causing intermittent movement of the rotary mold-cylinder. More particular ob jects of my invention will appear hereinafter.

In the accompanying drawings Figure 1 is a side view of a machine embodying my invention, Fig. 2 is a longitudinal vertical section on the line 2-2of Fig. 3, Fig. 3 is a plan view of the machine, with a portion in horizontal section through the axis of the mold-cylinder, and Figs. 4, 5 and 6 are detail transverse vertical sectional views on the lines 1-4, 55 and 6-6, respectively, of Fig. 1.

In the illustratedembodiment oi: my invention I provide a main frame comprising a pair of side-pieces 7 and frontand rear end-plates 8 star), the general formot said frame being rectangular, the inner sides of the frame-members being plane-surfaced and substantially vertical, and the outer sidesot' said members being variously ribbed and flanged, as shown. The rear upper por tions of the side-pieces? are recessed to receive jOurnaLblockslO, in the upper portions of which are formed bearings for a trans verse shaft 11, said shaft carrying at one end a fly-wheel12, and at theother end having a pulley 18 which may be connected b belt with a suitable sourceof power. pinion I l is secured on the intermediate portion of the drive-shaft 11, said pinion meshing with a gear 15 which is secured to a shaft 16, said shaft extending parallel with the shaft- 11 and being journaled in bearings formed in the side pieces 7 andthe lower portionsof the blocks 10.

Eccentrics 17 are mounted on the shaft '16adjoining the inner sides of the framemembers 7, said eccentrics each having connected therewith an eccentric-rod 18 which extends forwardly therefrom and is actuated reciprocatinglyby the eccentric. The front ends of the eccentric-rods 18 are forked or longitudinally slotted and lit slidably upon rectangular guide-blocks 19 carried on a transverse shaft 20. The end-portions of saidshait 20 are mounted in blocks 21 which are disposed in vertical slots in the frame side-pieces 7, there being a plurality of shimplates 22 disposed above and below said blocks 21, and screws 23 being arranged at the lower ends of the slots for retaining the members therein by pressing the same toward the upper endsthereof. By transposing the plates 22 from above to below, or

from below to above the bearing-blocks 21, the position of the latter may be varied vertically, for a purpose which will appear hereinatter. A transverse shaft 24 has the ends thereof held in bearings in the intermediate portions of the eccentric-rods 18, and the central portion of said shaft extends through a block 25 which disposed slidably in a slot formed in the central portion of a rocking-lever 26. Said lever is fulcrumed at its lower end on the intermediate portion of a shaft 27 which extends through suitable bearings therefor in the lower portions'of the frame members 7. A shaft 28 extends otedon the end-portions ofsaid shaft. The

front ends of said connecting-rods are pivotally connected with the end-portions of a shaft which extends through the rear portion of a crosshead 30, said erosshead being slidable in horizontal gnidewaystherefor formed in theupper portions of the frame-members 7, as shown. The stroke or extent of movement of the crosshead, imparted thereto by the described actuating connections, may. be

varied by adjusting vertically the blocks 21 which support the ends of the shaft 20. It will be seen that when said shaft is loweredthe shaft 24 passes through a portion of the slot in the rocking-lever 26 nearer to the fulcrum-shaft 27, so that with the same stroke of the eccentric-rods 18 the rockingle ver will be moved through a greater angle, andthereby increase the stroke of the crosshead. Conversely, raising of the shaft 20 causes the shaft 2 f to work in a portion of the rockingdever more distant from the fulcrum-shaft, so that the angular movement of the rocking-lever and the stroke of the cross-head are reduced.

Eccentrics 31 are secured on the shaft 16 adjoining the outer ends of the bearings for said shaft in the side-pieces '7 of the frame. Said eccentrics actuate reciproca ingly eccentric-rods 32 which extend forwardly and downwardlytherefrom, the ends thereof bein forked and straddlingthe in v v D Q terme'diate portions of rocking-levers 38 of which the lower ends are fulcrumed on endportions of the shaft 27 which extend outside the frame-members? The forked ends of the eccentric-rods 32 are pivotally connected' with the rocking-levers 33 through the medium of cross-pins 3% carried by blocks arranged in slots in the rocking-levers, shim-plates 35 being arranged above and below said blocks, and the several menr bers being held in place by cotters 86, as shown. Transposition of the shim-plates from the lower to the upper portions of the slots, or vice versa, enables the cross-pins to be moved toward or away from the fulcrum-shaft and increases or reduces the angularstroke of the rocking-levers. Connecting-rods 87 are pivotally connected-with the upper ends'of the rocking-levers, 33 and extend forwardly herefrom to connect pivotally with the intermediate portions of pawllevers 38 which are fulcrumed on pins 39 extending out from the lower portions of the frame-members 7 beneath the bearings of the mold-cylinder shaft. The upper ends or heads of the levers 38 are bored to receive slidably the pawl-pins l0, springs 41 being provided, as shown in 'Fig. 4, for pressing the pawl-pins in toward the ratchetplates42 with which they cooperate. The ratchet-plates 42 are secured on the end-portions-of' a large tubular shaft 43 which is revolubly 'mounted in bearings formed in the upper forward portions of the framemembers 7. Each of the ratchet-plates has therein a plurality of uniformly-spacod radially extending slots 41- 1 into which the pawl-pins lO drop at the rearward limits of movement of the levers 35v, and the stroke of said levers is so adjusted that during each forward movement thereof the ratchet:- plates and shaft 413 are ihcrcby rotated through the angles included between adjacent pairs of the slots 414- In the faces of the ratchet-plates. between each pair of the slots if, there are grooves or channels 45 which are curred so as to be concentric with the fulcrum-pins 39 of the pawl-levers when the respective grooves are at the lowermost portion of the ratchet-plates. The bottoms, or inner sides of the grooves 15 are inclinod axially of the shaft l3, so that during the rearward strokes of the pawl-leym's 38 the pins -10, by engaging said inclined surfaces. are pressed outwardly until, at the rear end of the stroke, said pins are actuated by the springs 41 to pass into the succeeding slots id.

The mold-cylinder is secured upon the intcrinediate portion of the tubular shaft 4-3 and comprises a pair of end-plates ll) ar ranged on the shaft adjoining the inner ends of the bearings therefor. and a central member 4? to which said end-plates are secured. Said member 47 has formed therein a series of recesses or mold-cavities -Ll-S which open at the peripheral portion of the member, and of which the ends are closed by the plates to. The mold cavities -18 are equally spaced circumfercntially of the vylinder, and are the same in mnnbcr as the slots i l of the ratchet-plates. The inner portions of the mold-cavities are tapering or wedge-shaped, being smaller at the bottoms than at the outer sides. Each of the mold-cavities is provided at the bottom with an ejector-plate 41:9 from which two or more stems 50 extend in radially through the side of the shaft 13, and within the bore of the shaft each of said stems has a coil spring 51 disposed around the same and bearing against a collar thereon to press h same inwardl and thereby normally retain the ejector-plate in the bottom of the moldcavity. A rod extends through the bore of the shaft 4-3 coaxially therewith. the ends of said rod being polygonal and fitting into sin'iilarly shaped openings in brackets 4: 3. by which the rod is held fixedly. On said rod 52, adjoining the inner ends of the stems 50, cam-disks 5 1- are secured so as to be engageable by said stems during relation of the mold-cylinder. (in the lower portions of the cam-disks uro projecting l parts 55 which engage and push outwardly the passing stems, so that the ejector-plates are thereby displaced from the inner ends of the mold-cavities, as shown in F 2.

A. feed hopper or chute 56 is arranged at lll) e trout side of the mold-cylinder, the sides said chute being .fitted around the peripheral edges olithe. end-plates l6 of the cylinder, and the'chute being supported by curved brackets 57 resting on the upper edges Oi. the frame-members 7, as shown. in Fig. 5. In the lower portion of said chute 56 there is formed a horizontal guideway for a reciprocating feed-block or plunger 58,.troni the ends of which pins as extend through slots in the sides of the chute beneath the brackets 57. taid pins 591fit pivotally in blocks (5f). which are slidably disposed in the upper forked ends of levers G1. and aid lovers are fulcrumed on pivotbolts 62 which extend through .theliranie members 7 adjoining; the front ends there of, asshown. The levers (iii are actuated reciprocatingly by means oi the eccentricrods 18, the latter having near the front ends thereof downwardly extending lugs (33 from which connecting-rods 64- extend forwardhorizontally to the lower ends of said feed-levers 61. It will be noted from Figs. l and 5, that whilethe connectingrods 64 are disposed between the sides of the frame, said rods are so arranged latorally as not to be under the mold-cavities, so that said rods do not interfere with ejection otthe compressed. material from the mold-cavities at the lower portion of the cylinder.

The main compressionplunger 65 is carried by the cross-head 80, being secured thereto as shown in Fig. 3, and being proportioned so as to pass into the outer portions of the several mold-cavities the same are successively presented thereto by the intermittent rotary movement oi the mold-cylinder. The pawl and ratchet-plate actuating; devices for the mold-cylinder are so timed, and the movements thereof so proportioned, that each actuating stroke ofthe pawls will bring one of the mold-cavities into register with the plunger 65, while at the opposite or front side of the cylinder one of the moldevities will be in register with the reciprocating feed-block. The ac mating; devices for the crosshead and teeth bloch are so timed that said parts are with drawn from the cylinder during the periods of movement of the cylinder, and so that the cylinder remains stationary as the reciproeating parts approach or enter the moldcavities. lowering oi the shaft 20. to vary the stroke of the crosshead 30 as before described, will not appreciably vary the movement oi the teed-block 58. so that varying degrees of compression of the material may be attained by adjusting; the strokeot' the crosshead,

without altering; the feed mechanism. For convenience of assembling and dis-assemhlmg the mechanism, the frame-membeis 7 It will be seen that raising or have opcnings therein, as shown in Fig. 1, opposite the endsot the connecting-mods 64: and of the shaft 2d. i

i The operation oi? the mechanism as a whole will be apparent from the foregoing" "the direction oi movement of the cylinder beingfas indicated by arrows in 1 and 2. The plunger and feed-block are moved simultaneously toward the cylinder while the same is at rest, the teed-block pushing material "from the fced-chute into the respectively adjacent mold-cavity and lightly conmressing the same therein. Succeeding movements of the mechanism carry the filled mold cavities into register with the plunger as, where the material is compressed into the cavities, so as to be formed into a briquet conforming in shape to the mold. Then, by means of the ejector-plates 49, the briquets are loosened and partially ejected from the.

cavities, so as to fall therefrom at the lower side of the cylinder, the briquets passing; down between the connecting-rods 64 and being received in a chute or conveyor disposed beneath the front portion of the machine.

It will be obvious that by suitable formation of the mold-cavities, and oil the forward face of the compression-planger 65, the briquets may be made oi. any desired form such as to be capable of satisfactory ejection from the mold; and it will also be apparent that the mold-cavities may he in longitudinally arranged series so that a plurality of the briquets may be formed at each stroke of the plunger.

Now, having described my invention, what I claim and desire to secure by Letters Pat cut is:

1. In a press of the class described, an axially-horizontal i'noldcylinder having a plumlity of peripheral mold-cavities therein, reciprocating means at one side of said cylinder 'for feeding material into the moldcavities, reciprocating; means at the opposite side oi? the cylinder adapted. to enter the mold-cavities to compress material therein, means for actuating said feeding means and compressing means in unison, means for varying the stroke of the compressing mea us, means For intermittently rotating the mold-cylimler to dispose the successive moldcavities in register with the feeding means and compressing means, and means for feeding positions.

ejecting material from the mold-cavities at positions intermediate the compressing and 2. In a press of the class described, a cylinder having a plurality of peripheral mold- CtlVltlGS therein, a crosshead movable toward and away from said cylinder and having a part adapted to enter a mold-cavity in the cylinder; means for intermittently moving'the cylinder to present the successive mold-cavities in register with said part, a rocking-lever connected with said crosshead and having a longitudinal slot therein, a reciprocating actuating member having a fixed travel and movable in said slot and means for moving said member toward and away from the lever-fulcrum transversely of its path of reciprocation to vary the stroke of the rocking-lever and crosshead.

3. In a press of the class described, the combination With a horizontal cylinder having a plurality of peripheral mold-cavities therein, of a compression-plunger and a feed-block movable reciprocatingly at opposite sides of the cylinder, means for intermittently actuating the cylinder to present the mold-cavities successively to said feed-block and plunger, rocking-levers conterial therein, means for intermittently moving the mold-member to present its cavities successively in register with said plunger, a crosshead carrying said plunger, a slotted rocking-lever connected with said crosshead, an eccentric-driven rod ]ll()\'- able transversely of said roeking-lever a member carried by said rod and movable in the slotted portion of the rocking-lever to actuate the same, guidin means for one end of said rod, and means Ior varying the position of said guiding means to change the relation of the rod to the rocking-lever longitudinally thereof and thereby more the member carried by said rod toward or away from the fulcrum of the rocking-lever to vary the stroke thereof.

lVILLIAM P. MIGHAIGLSEN. 

